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ntfs: return -ERANGE for undersized xattr buffer

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When the value buffer passed to getxattr(2) for system.dos_attrib,
system.ntfs_attrib or system.ntfs_attrib_be is smaller than the
attribute value, ntfs_getxattr() returns -ENODATA, which tells
userspace the attribute does not exist. The xattr API expects
-ERANGE in this case, and ntfs_get_ea() in the same file already
returns -ERANGE for regular EAs.

Fixes: fc053f05ca ("ntfs: add reparse and ea operations")
Signed-off-by: Baolin Liu <liubaolin@kylinos.cn>
Reviewed-by: Hyunchul Lee <hyc.lee@gmail.com>
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
This commit is contained in:
Baolin Liu 2026-08-21 13:32:33 +08:00 committed by Namjae Jeon
parent 9692b1b4fc
commit ada7288019
1 changed files with 2 additions and 2 deletions
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4
fs/ntfs/ea.c
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@ -615,7 +615,7 @@ static int ntfs_getxattr(const struct xattr_handler *handler,
if (!buffer) {
err = sizeof(u8);
} else if (size < sizeof(u8)) {
err = -ENODATA;
err = -ERANGE;
} else {
err = sizeof(u8);
*(u8 *)buffer = (u8)(le32_to_cpu(ni->flags) & 0x3F);
@ -628,7 +628,7 @@ static int ntfs_getxattr(const struct xattr_handler *handler,
if (!buffer) {
err = sizeof(u32);
} else if (size < sizeof(u32)) {
err = -ENODATA;
err = -ERANGE;
} else {
err = sizeof(u32);
*(u32 *)buffer = le32_to_cpu(ni->flags);